package com.example.demo.controller;

public class test {
    public static void main(String[] args) {
        String a=say("13");
        System.out.println(a);
    }

    private static String say(String s) {
        if (s=="123"){
            return "对的";
        }
        System.out.println("看看");
        return "错的";

    }
}
